1 files changed, 18 insertions, 1 deletions
diff --git a/src/ring.h b/src/ring.h
index 6466a69..1b1727e 100644
--- a/src/ring.h
+++ b/src/ring.h
@@ -25,13 +25,26 @@
 #include "parser.h"
 #include "list.h"
 
+typedef enum {
+	TECO_BUFFER_CLEAN = 0,
+	/** buffer modified */
+	TECO_BUFFER_DIRTY,
+	/** modified and backup already written */
+	TECO_BUFFER_DIRTY_BACKEDUP
+} teco_buffer_state_t;
+
 typedef struct teco_buffer_t {
 	teco_tailq_entry_t entry;
 
 	teco_view_t *view;
 
 	gchar *filename;
-	gboolean dirty;
+
+	/**
+	 * A teco_buffer_state_t.
+	 * This is still a guint, so you can call teco_undo_guint().
+	 */
+	guint state;
 } teco_buffer_t;
 
 /** @memberof teco_buffer_t */
@@ -70,6 +83,10 @@ void teco_ring_dirtify(void);
 guint teco_ring_get_first_dirty(void);
 gboolean teco_ring_save_all_dirty_buffers(GError **error);
 
+extern guint teco_ring_backup_interval;
+
+void teco_ring_backup(void);
+
 gboolean teco_ring_edit_by_name(const gchar *filename, GError **error);
 gboolean teco_ring_edit_by_id(teco_int_t id, GError **error);